Seiko Cal. 6638 - 471

Seiko 6638-471

The 6638-471 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6638 caliber with 20j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-1fb20dcd3c05]

Also known as: Samurai, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
10.5mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Champagne
Jewels
20j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1984

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